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Toshiba 50A60 Service Manual

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SERVICE MANUAL
COLOR TELEVISION
All manuals and user guides at all-guides.com
50A60 , 50A50
(TAC0050)
55A60 , 61A60
(TAC0052)
FILE NO. 020-200012
N0NSP Chassis
(TAC0051)
(TAC0053)
PUBLISHED IN JAPAN, May., 2000 S

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  • Page 1 All manuals and user guides at all-guides.com FILE NO. 020-200012 SERVICE MANUAL COLOR TELEVISION N0NSP Chassis 50A60 , 50A50 (TAC0050) (TAC0051) 55A60 , 61A60 (TAC0052) (TAC0053) PUBLISHED IN JAPAN, May., 2000 S...

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com TABLE OF CONTENTS CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS ............................3 CRT ASSEMBLY REPLACEMENT AND MOUNTING ..................... 4 PICTURE TUBE COMPONENTS ADJUSTMENT ....................6 REPLACEMENT OF THE CRT ..........................8 SERVICE MODE ..............................9 ELECTRICAL ADJUSTMENT ..........................

  • Page 3: Chapter 1 General Adjustments

    All manuals and user guides at all-guides.com CHAPTER 1 GENERAL ADJUSTMENTS SAFETY INSTRUCTIONS WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous 2.

  • Page 4: Crt Assembly Replacement And Mounting

    All manuals and user guides at all-guides.com CRT ASSEMBLY REPLACEMENT AND MOUNTING CAUTION : DO NOT LOOSEN THE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSE THOSE ARE FOR SEALING OF CRT COOLANT. Attention Serviceman The Hex Head Bolts with Springs.
  • Page 5 All manuals and user guides at all-guides.com TO REMOVE CRT (Same procedure for R, G, B) 1. Remove CRT DRIVE Board, S. V. M. COIL and DEF. YOKE from CRT. 2. Remove Lens Assembly. 3. Detach CRT Anode Cap from CRT. 4.

  • Page 6: Picture Tube Components Adjustment

    All manuals and user guides at all-guides.com WARNING : BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRE- CAUTION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL. PICTURE TUBE COMPONENTS ADJUSTMENT DESCRIPTION OF NECK COMPONENTS TILT ADJUSTMENT Rotate R, G, B deflection yoke so that picture becomes horizon, then fasten screw.
  • Page 7 All manuals and user guides at all-guides.com LOCATION OF SCREEN AND FOCUS VR’S SCREEN VR FOCUS VR – 7 –...

  • Page 8: Replacement Of The Crt

    All manuals and user guides at all-guides.com REPLACEMENT OF THE CRT Service parts are provided for each R, G and B. The contents of the parts are as follows. 50A50 23796001 23005397 23796003 ↑ 50A60 23005114 23005115 HITACHI ↑ ↑ 55A60 23005242 ↑...

  • Page 9: Service Mode

    All manuals and user guides at all-guides.com SERVICE MODE 1. ENTERING TO SERVICE MODE 1) Press MUTE button once 2) Press MUTE button 3) While pressing the MUTE button, on Remote Control. again to keep pressing. press MENU button on TV set. MUTE (Service mode display) 2.
  • Page 10 All manuals and user guides at all-guides.com 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2. (t button for reverse order) Refer to table-2 for preset data of adjustment mode. (See SETTING &...

  • Page 11: Electrical Adjustment

    All manuals and user guides at all-guides.com ELECTRICAL ADJUSTMENT ITEM ADJUSTMENT PROCEDURE VERTICAL POSITION (VCEN) 1. Call up the adjustment mode display, then select item VCEN. 2. Press the VOLUME s or t button to get the voltage +30 ±10 mV. 3.
  • Page 12 All manuals and user guides at all-guides.com ITEM ADJUSTMENT PROCEDURE HEIGHT 1. Call up the adjustment mode display, then select the item HIT. (HIT) 2. Press the VOLUME s or t button to get the picture so the top of raster begins to lack.

  • Page 13: Convergence Adjustment

    All manuals and user guides at all-guides.com CONVERGENCE ADJUSTMENT Adjust convergence from center to circumference in order. 1. Select the adjustment mode following the steps on page 9. RCUT KEY FUNCTION IN THE CONVERGENCE ADJUSTMENT: Up : 2 button Selet Green color: 3 button Left : 4 button...
  • Page 14 All manuals and user guides at all-guides.com NOTES In many cases, color misconvergence may be corrected by returning HIT and WID data in main deflection side to initial adjusting values. Following cases will surely require readjustment of convergence. CRT REPLACEMENT When CRT is replaced, main deflection readjustment and color matching are required.

  • Page 15: Screen And Mirror Alignments

    All manuals and user guides at all-guides.com SCREEN AND MIRROR ALIGNMENTS ASSEMBLING OF MOUNTING OF FRONT SCREEN FRONT SCREEN 5 screws Fresnel sheet 3 screws Protect shield FRONT 3 screws (for 50”) Lenticular sheet 3 screws Protect shield FRONT Fresnel sheet Stick cotton cloth tape Label with part...

  • Page 16: Circuit Checks

    All manuals and user guides at all-guides.com CIRCUIT CHECKS HIGH VOLTAGE CHECK FS CIRCUIT CHECK CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on The Fail Safe (FS) circuit check is indispensable for the final this chassis. Checking should be done following check in servicing.

  • Page 17: Chapter 2 Specific Informations

    All manuals and user guides at all-guides.com CHAPTER 2 SPECIFIC INFORMATIONS SETTING & ADJUSTING DATA SAFETY INSTRUCTIONS 43", 50", 55", 61" HIGH VOLTAGE AT ZERO BEAM: 31.3 kV MAX HIGH VOLTAGE: 32.4 kV Table-1 SERVICE MODE ADJUSTING ITEMS AND DATA IN THE SERVICE MODE: Item Name of adjustment Preset...

  • Page 18: Location Of Controls

    All manuals and user guides at all-guides.com LOCATION OF CONTROLS (Representative : 50A60) TV front Behind the door MENU EXIT TV/VIDEO DEMO AUDIO S-VIDEO POWER VIDEO L/MONO Video Audio inputs POWER VOLUMET S EXIT DEMO MENU CHANNEL st TV/VIDEO TV rear ANT (75Ω)
  • Page 19 All manuals and user guides at all-guides.com Remote Control LIGHT RECALL LIGHT RECALL POWER POWER TV/CABLE/VCR switch MUTE TV/VIDEO TIMER CABLE Set to “TV” to control the TV. TIMER MUTE TV/VIDEO CHANNEL s/t Channel Number VOLUME s/t CH RTN CH RTN C.

  • Page 20: Programming Channel Memory

    All manuals and user guides at all-guides.com PROGRAMMING CHANNEL MEMORY The channel memory is the list of TV channel numbers the TV tunes in when you press the CHANNEL s or t button. First, use the TV/CABLE and CH PROGRAM functions to preset all active channels in your area automatically. If necessary, arrange the preset channels with the ADD/ERASE functions so that you can tune into only desired channels.

  • Page 21: Circuit Block Diagram

    All manuals and user guides at all-guides.com CIRCUIT BLOCK DIAGRAM – 21 – – 22 –...

  • Page 22: Mechanical Disassembly

    All manuals and user guides at all-guides.com MECHANICAL DISASSEMBLY 1 Speaker Grille Removal 2 Control Panel Removal 3 Front Mask Removal 4 Mask Removal A101 A201 A267 A221 A201 (A322) A213 A224 A266 A202 K502 A103 A126 A266 A265 A268 A127 K501 (K511)

  • Page 23: Chassis Replacement Parts List

    • The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model number and Description. • The PC board assembly with mark is no longer available after the end of the production. Models : 50A60/50A50/55A60/61A60 Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
  • Page 24 Part No. Description Part No. Description CD, 1500pF, ±10%, 2kV EL, 10?F, ±20%, 50V C415 24092484 C628 24206100 EL, 10?F, ±20%, 50V (50A60/55A60/61A60) C629 24206100 EL, 0.1?F, ±20%, 50V C416 24828333 PF, 0.033?F, 200V C630 24206108 EL, 2.2?F, ±20%, 250V C417...
  • Page 25 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description EL, 2.2?F, ±20%, 200V C739 24092293 Chip, 0.1?F, +80%, -20%, 25V C869 24678229 C740 24092293 Chip, 0.1?F, +80%, -20%, 25V C870 24082890 PF, 0.082?F, 800V EL, 47?F, ±20%, 16V CD, 1500pF, ±10%, 2kV C741...
  • Page 26 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description EL, 100?F, ±20%, 25V EL, 1?F, ±20%, 50V C7755 24667101 CS04 24206010 EL, 4.7?F, ±20%, 50V C7765 24669479 CS07 24436221 CD, 220pF EL, 4.7?F, ±20%, 50V EL, 1?F, ±20%, 50V C7766 24669479...
  • Page 27 Description Part No. Description EL, 10?F, ±20%, 50V CV64 24206100 R150 24872101 Chip, 100 ohm, 1/16W CV65 24591122 PF, 1200pF (50A60/55A60/61A60) CV66 24436561 CD, 560pF R151 24872562 Chip, 5600 ohm, 1/16W CV67 24591102 PF, 1000pF (50A60/55A60/61A60) EL, 1?F, ±20%, 50V...
  • Page 28 Location Part No. Description Part No. Description R338 24872682 Chip, 6800 ohm, 1/16W R428 24310109 MF, 1.0 ohm, 1/2W (50A60/55A60/61A60) R431 24383102 OMF, 1k ohm, 2W R339 24872393 Chip, 39k ohm, 1/16W (50A60/55A60/61A60) (50A60/55A60/61A60) R432 24376274 CF, 270k ohm, 1/2W...
  • Page 29 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description R512 24872101 Chip, 100 ohm, 1/16W R709 24872100 Chip, 10 ohm, 1/16W R514 24872122 Chip, 1200 ohm, 1/16W R710 24872100 Chip, 10 ohm, 1/16W R515 24872103 Chip, 10k ohm, 1/16W R711...
  • Page 30 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description R818 24366471 CF, 470 ohm R965 24366471 CF, 470 ohm R819 24366102 CF, 1k ohm R966 24366821 CF, 820 ohm MF, 15k ohm, ±1%, 1/4W R820 24327153 R967...
  • Page 31 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description R7779 24872102 Chip, 1k ohm, 1/16W RB03 24872101 Chip, 100 ohm, 1/16W R7780 24872102 Chip, 1k ohm, 1/16W RB04 24366103 CF, 10k ohm R7781 24872333 Chip, 33k ohm, 1/16W RB14 24872153...
  • Page 32 RS52 24366103 CF, 10k ohm RW23 24366471 CF, 470 ohm RV01 24366472 CF, 4700 ohm RW24 24366470 CF, 47 ohm (50A60/55A60/61A60) RW25 24366182 CF, 1800 ohm RV03 24366101 CF, 100 ohm RW30 24552100 OMF, 10 ohm, 1/2W RV04 24366101 CF, 100 ohm...
  • Page 33 L101 23289845 Coil, Peaking, TRF4680AT L851 23103880 Coil (Ferrite Bead), TEM2011Y L111 23289845 Coil, Peaking, TRF4680AT L852 23103880 Coil (Ferrite Bead), TEM2011Y (50A60/55A60/61A60) L853 23248073 Coil, Choke, TLN3299D L115 23103852 Coil, Filter, TEM2028AH L854 23248073 Coil, Choke, TLN3299D (50A60/55A60/61A60) L861...
  • Page 34 SEMICONDUCTORS SEMICONDUCTORS SEMICONDUCTORS Q715 23906908 IC, MC33078DR2 Q717 23906908 IC, MC33078DR2 Q151 A6541130 Transistor, 2SA1162-Y Q719 23906908 IC, MC33078DR2 (50A60/55A60/61A60) Q751 23905094 IC, STR392-110 Q152 A6335470 Transistor, 2SC2712-Y Q752 23905094 IC, STR392-110 (50A60/55A60/61A60) Q754 23904521 IC, AN7805 Q201 A6335470 Transistor, 2SC2712-Y...
  • Page 35 IC, TA8851CN D406 23118094 Diode, EU2A, LF-F10 QV20 A6002040 Transistor, RN1204 D407 23118707 Diode, RP 1H, LF-C1 QV21 23114528 Transistor, 2SC1740S, Q (50A60/55A60/61A60) QV22 23114530 Transistor, 2SA933S-Q D408 A7978850 Diode, S5295G QV23 23114530 Transistor, 2SA933S-Q D412 23118094 Diode, EU2A, LF-F10...
  • Page 36 Diode, Zener, MA8062-M, TX GJ705 24000824 Chip Jumper, 2125Type DA11 23118859 Diode, 1SS133 GR01 24000824 Chip Jumper, 2125Type DA34 23118041 Diode, MA111-(TX) (50A60/55A60/61A60) DA43 23118041 Diode, MA111-(TX) GR02 24000824 Chip Jumper, 2125Type DA44 23118041 Diode, MA111-(TX) H003 23344421 RF Switch, RSU133X6...
  • Page 37 All manuals and user guides at all-guides.com Location Location Part No. Description Part No. Description KB11 23904946 Remote Sensor, E033Z CRT-D/B Board, PB9454A3 RPM-676CBR-S (50A60/55A60/61A60) P002 23365089 F Connector(50A50) E033Z CRT-D/B Board, PB9454B3 P701 23367724 Plug, B-B,15P (50A50) P702 23367724 Plug, B-B,15P...
  • Page 38 Description Part No. Description ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES ACCESSORIES A703 23935868 Packing, Top(61A60) A708 23935848 Packing, Bottom (50A60/50A50) K912 23306263 Remote Hand Unit, CT-9946 A708 23935866 Packing, Bottom (55A60/61A60) (50A60/55A60/61A60) A721 23943628 Cover, Poly K912 23306359 Remote Hand Unit, CT-90037...
  • Page 39 All manuals and user guides at all-guides.com SIGNAL/CON BOARD PB9450 BOTTOM (FOIL) SIDE – 41 – – 42 –...
  • Page 40 All manuals and user guides at all-guides.com DEF/POWER BOARD PB9451 BOTTOM (FOIL) SIDE – 43 – – 44 –...
  • Page 41 All manuals and user guides at all-guides.com BACK/AV BOARD PB9452 BOTTOM (FOIL) SIDE – 45 –...
  • Page 42 All manuals and user guides at all-guides.com DIGI-CONV BOARD PB9453 BOTTOM (FOIL) SIDE DIGI-COMB BOARD PB9398 BOTTOM (FOIL) SIDE – 46 –...
  • Page 43 All manuals and user guides at all-guides.com R-DRIVE BOARD PB9454-1 BOTTOM (FOIL) SIDE B-DRIVE BOARD PB9454-3 BOTTOM (FOIL) SIDE – 47 –...
  • Page 44 All manuals and user guides at all-guides.com B-DRIVE BOARD PB9454-2 FRONT-CONT BOARD PB9454-4 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE – 48 –...
  • Page 45 All manuals and user guides at all-guides.com FRONT-CONV BOARD PB9454-5 BOTTOM (FOIL) SIDE FRONT-IN BOARD PB9454-9 BOTTOM (FOIL) SIDE REM BOARD PB9454-10 BOTTOM (FOIL) SIDE – 49 –...
  • Page 46 All manuals and user guides at all-guides.com SVM BOARD PB9454-6 FRONT-CON BOARD PB9454-8 BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE – 50 –...

  • Page 47: Terminal View Of Transistors

    All manuals and user guides at all-guides.com TERMINAL VIEW OF TRANSISTORS 2SD2253 2SC3852 2SC752GTM 2SC752 2SA1788 (old) 2SD1763A 2SC2482 2SA562TM 2SC5243 2SC1569 2SC2655 2SA1015 2SC4544 2SC4721P 2SC1815 2SA1788 2SC2878 2SA1306 2SC1740S 2SA1186A 2SC2120 2SA9335 RN2203 2SD1554 ON4409 RN2201 2SD2253 RN2004 2SD1556 RN1203 2SD2553...
  • Page 48 All manuals and user guides at all-guides.com MEMO ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................– 52 –...

  • Page 49: Specifications

    All manuals and user guides at all-guides.com SPECIFICATIONS (Representative: 50A60) TELEVISION SYSTEM NTSC standard CHANNEL COVERAGE VHF: 2 through 13 UHF: 14 through 69 Cable TV: Mid band (A-8 through A-1, A through I) Super band (J through W) Hyper band (AA through ZZ, AAA, BBB)
  • Page 50 All manuals and user guides at all-guides.com...

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